Driving means for applicators



Sept. 27, 1932. c. F. sElBERT E'r AL DRIVING MEANS FOR APPILIICATORSFiledv June` 24, 1929 INI/ENTORS A TTORNEY Patented Sept. 27, 1932UNITED STATES PATENT OFFICE CARL F. SEIBERT, OF HAMILTON, AND ELMER J.SEIBERT, OF CINCINNATI, OHIO y DRIVING MEANSYFOR APPLIGATORS Applicationined June 24,

Our invention relates to driving means `for applicators int-ended foruse for instance in treating surfaces, for example, of vehicles such asautomobiles, in cleaning, waxing or polishing-the same.

Our improved device is intended for use l in connection with the vehicletreating device shown, described and claimed in our applica` tion forpatent on vehicle treating device, liled in the United States PatentOffice Janu-V ary 17, 1929, as Serial No. 333,189, and in connectionwith applicators such as shown, described and claimed in ourapplications for patents on improvement in applicatorsfor treatingsurfaces, respectively7 filed in the United States Patent Office June12th, 1929, as Serial No. 370,192, and June 24th1929, as Serial No.373,301.

Applicators of this character are rotatable and are manually manipulatedfor proper contact between the applicator and the sur face beingtreated. It is desirable that rotation of the applicator shall be underinstant control of the operator for starting and stopping rotation ofthe same. l

1t is the obj ect of our invention to provide novel means for driving anapplicator of this character; further, to provide novel Vmeans forcausing cessation of rotation'of the appli- A cator; and, further, toprovide novel means whereby undue resistance to rotation oftheapplicator, for instance, by undue pressure between the applicator andthe surface being treated, causes slippage between the driving means andthe applicator to prevent injury to the surface being treated.

The invention will be further readilyunderstood from the followingdescription and claims, and from the drawing, in which latter:

Fig. 1 is a side elevation of our improved device, the flexible shaftand casing therefor being partly broken away.

2 is an axial section of our improved device, taken on the line 2 2 ofFig. 1, with the applicator-head and the flexible shaft and casingtherefor partly broken away.

Fig. 3 is a side elevation of a detail of our improved device, partlybroken away.

Fig. 4 is a cross-section-ofour improved de- 41929. Serial N0. 373,302.

` vice, taken in the plane of the line 4 4 of Fig. 2; and,

Fig. 5 is an axialsection of a detail of our improved device, takenV inthe plane of the line 5-5 of Fig. 2.

The applicator` head is represented at 11. This head is rotatable and isalso manually manipulated. A manipulating handle 12 is provided. Theapplicator head and its form andA its driving connection are not hereinclaimed,=having been shown, described and claimed in our aforesaidapplications copending herewith.

The manipulating handle comprises a tube 13, shown as a cylindricaltube, having a cover 14. This cover is preferably a ribbed rubbercover,so that the handle may be firmly gripped by the operator. A thimble 15is fixed in one end of the tube, as by means of screws 16, receivedthrough holes in the tube and threaded in threaded holes in the hub 17of thethimble.

A drive-shaft 21 is journaled in the tube, as in a ball-bearing 22 insaid tube. The inner raceway of the ball-bearing is received about thereduced shank 23 of the drive-shaft and against an annular shoulder 24formedthereby. The outer raceway of the ball-bearing is. receivedagainst a collar 25, held in the tube by screws 26, received throughrholes in the tube and threaded in threaded holes in the collar.

A flexible drive-shaft 29 is operatively con-V nected with the`drive-shaft 21. This is shown accomplished by providing the end of theflexible drive-shaft with a ferrule 30 fixed thereto. The ferrule isreceived in one end of a sleeve 31, being fixed therein so as torotatively connect the flexible shaft and the sleeve. ceiving thereduced end 23 of the drive-shaft. A pin 34 in the sleeve extendscrosswise of said bore and isreceived in a slot 35 in said reduced endof the drive-shaft.I

A flexible casing 41 is located about the flexible drive-shaft, and isprovided with a exible cover 42. The end of the flexible casing and theend of the flexible cover are received in the tube 13, and arefixedtherein, as. by being clamped in the clamp end The sleeve has abore 32 for re- 43 of the sleeve. The cover 14 of the tube 13 isreceived between an annular bead 44 formed by said clamp and an annularfla-nge 45 formed on the thimble 15.

A driving member 49 has releasable drive connection with the drive-shaft21. This driving member is preferably releasable from the drive-shaft soas to interrupt the operative connection between the drive-shaft and thedriving member when it is desired that outer raceway of the ball-bearingcontacts the inner end of the hub 17. The inner raceway of thisball-bearing is resisted inwardly by a collar 51 fixed to thedrive-shaft 49 by a pin 52. y

The shaft 49 is provided With an inner reduced extension 53 which isjournalcdin a bushing 54 located in an axialV bore 55 of the drive-shaft21. A step-bearing, shown as a y ball 56, is located between the innerend of the drive-shaft 49 and the bottom wall of said bore. Ate-lescoping connection is thus formed between the drive-shafts.

A releasable driving clutch 61 is located between thedrive-shaft 21 andthe driveshaft 49. This clutch is shown as a tooth clutch, comprisingclutch teeth ,62 on the end of the sleeve portion 63of'the drive-shaft21,-

and coactingclutch recesses 64 inthe proximate end of ayieldableclutch-sleeve 65 received about the drive-shaft 49.

The side walls of these clutch teethand clutch recesses are tapered asshown at 66, 67, respectively. A pin 68 in the driving member 49 isreceived in slots 69 in the sleeve 65.

Aspring 71, shown as a helical spring, is received about the shaft 49between thecollar 51 and the sleeve 65 for urging engagement between thecoacting faces of the clutch 61.

The power transmission of the clutch 61 c is controlled by theresistance of this spring and the inclination of coacting taper faces66, 67, of the clutch members. The spring acts to normally engage thisclutch for transmission ofv rot-ation between the drive shaft 21 and theapplicator-head. y

Control means. are on the handle 12 for controlling the engagement ordisengagement of the clutchk 61. These control means are Y exemplifiedas knobs 74 at the outside of the tube 13. Pins 75 connect these knobswith a sleeve 76. The inner ends of these pins are threaded and receivedin threaded holes in a collar 77 fixed to the sleeve 76. This collar isrotatable in the inside of the tube 13 and centers the sleeve 76 in saidtube.

The sleeve 76 is provided with a flange 78 at itsl inner end receivedabout the inner end of the clutch-sleeve 65, the flange being turnedinwardly so as to engage the outer annular portion of said sleeve, whichis shown of greater diameter than the proximate outer periphery of thesleeve-portion 63 of the drive-shaft 21.

The pins 75 are slidable in slanting slots 81 formed in the tube 13.When the knobs 74 are moved about the tube 13 in one direction, the pinsclimb in said slots toward one end of the tube 13 for moving the clutchsleeve 65 away from the drive-shaft 21, the spring 71 yielding to saidmovement. The knobs 74 are guided in slots 7 3 in the cover 14.

Vhen the knobs 74 are moved about the tube 13 in the opposite direction,the pins 75 move along the inclined slots 81 in the opposite directionand toward the drive-.shaft 21 for axial movement of the clutch-sleeve65, urged by the spring 71, for engagement of the clutch 61, therebyplacing the shaft 49 in rotative drive relation with the driveshaft 21.

This rotative drive relation is, however, a slip drive relation, asexcess resistance to rotation of the applicator-head and shaft 49 causesthe 'inclined faces 67 on the clutch sleeve 65 to climb upon the inclinefaces 66 of the clutch-teeth 62. Recurrent engagement and release ofthese clutch-members takes place throughout such excessive resistance torotation of the applicator-head and shaft 49. Combined rotation of theclutchmembers again takes place as soon as such excessive resistance isremoved.

The collar 51 iXed to the drive-member 49 is provided with a conicalface 84 with which a cup-end 85 of the .sleeve 76 engages for providinga braking means for the applicatorhead for causing quick cessation ofrotation of the same.

-When the knobs 74 are moved for disengaging the -clutch 61 and the pins75 are caused to move axially of the tube outwardly in the inclinedslots 81, braking engagement is'a'lso caused in the brake. The directionof inclination of the slots 81 is such with relation to the direction ofrotation of the drive-shaft, that engagement in the brake tends to movethe knobs 74 and the sleeve 76 into clutch engaging position.

The applicator-head and the drive-shaft 49 are provided withcomplemental members of a chuck 88, exemplified as a tapered plug 89fixed to 'the applicator-head received in a tapered socket of a cup 91,which is part of the drive-shaft 49. A threaded shank 92 is Ertl securedin said socket. The outer end of the plug is provided with acomplemental threaded socket 93. The threads are in such direction thatresistance to rotation of the applictor-head causes said chuck-membersto be drawn together, so that the rotative driving of theapplicator-head by the driveshaft 49 tends to draw said chuck-facestoward each other.

The cup-member 91 of the chuck is shown rotatable in the thimble 15 ofthe handle.

Applicator-heads are readily released from the handle by manuallyunscrewing the same, and other applicator-heads substituted on thehandle. Applicator-heads may be automatically removed from the handlewhile rotating, by quick and firm application of the brake, which causesthe chuck-member on the drive-shaft 49 to suddenly .Stop rotating, theapplicator-head continuing to rotate by reason of its inertia ofrotation and being thereby unscrewed from the handle, and, if held aboveits storage receptacle, dropping into said receptacle. y

Our improved device provides simple, compact and convenient means formanipulating and rotating the applicator-head. It also providesconvenient means for controlling the driving connection between theVdriving means and the applicator-head which are in convenient positionfor ready manipulation by the fingers of the operator when grasping themanipulating handle.

It further provides compact and ready yieldable means for permittingcessation of rotation of the applicator-head upon excess frictionalresistance to rotation of said head, and provides convenient and compactmeans for quick cessation of rotation of the applicator-head uponrelease oi' the driving clutch.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is:

l. In a device of the character described, the Combination of arotatable head, a manipulating handle therefor, said handle comprising atube, a drive-shaft in said tube, a flexible drive-shaft havingoperative connection therewith, a driving member in said tube for saidhead, releasable connecting means in said tube between said first-nameddrive-shaft and said driving member, a brake in said tube, saidreleasable connecting means and said brake each including a movablemember and manual control means having operative connection with each ofsaid movable members, said manual control means extending to outsidesaid handle where it is provided with a manipulating part, saidmanipulating part located at one end of-said handle, and said releasableconnecting means located in said handle between said manipulating partand said flexible drive-shaft.

2. In a device of the character described,

the combination of a rotatable head, a manipulating handle therefor,said handle comprising a tube, a drive-shaft in said tube, a fiexibledrive-shaft having operative connection therewith, a driving member insaid tube t'or said head, releasable connecting means in said tubebetween said first-named drive-shaft and said driving member, a bra-kein said tube for said driving member, and manual control means includingconnecting means in said tube with said releasable connecting means andsaid brake, said manual clmtrol means extending to outside said han- 3.In a device of the character described, the combination of a rotatablehead, a manipulating handle therefor,I said handle comprising a tube, adrive-shaft and a driving member in said tube for rotating said head,said drive-shaft and said driving member having telescoping connectionwith each other, bearings in said tube between said tube and saiddrive-shaft and said driving member respectively, a yieldable clutchbetween said drive-shaft and said driving member comprising a releasablemember, said clutch provided with complemental clutch-faces arranged torelatively yield to excess load, a spring urging clutch engagement, saidclutchfaces and said spring controlling the yield in said clutch, andmanual control means having automatically shiftable connection with saidreleasable clutch-member and extending to outside said tube.

4. In a device ot the character described, the combination of arotatable head, a manipulating handle therefor, said handle comprising atube, a drive-shaft and a driving member in said tube for rotating saidhead, said drive-shaft and said driving member having telescopingconnection with each other, bearings in said tube between said tube andsaid drive-shaft and said driving member respectively, a yieldableclutch between said driveshaft and said driving member comprising areleasable member, said clutch provided with complemental clutch-facesarranged to relatively yield to excess load, a spring urging clutchengagement, said clutch-faces and said spring controlling the yield insaid clutch, and manual control means having automatically shiftableconnection with said releasable clutch-member and extending to outsidesaid tube, said manual control means and said tube provided withcomplemental cam-faces controlling positional relation between theclutch-members.

5. In a device of the character described, the combina-tion of arotatable head, a manipulating handle therefor, said handle comprising atube, a drive-shaft and a driving member in said tube for rotating saidhead, said drive-shaft and said driving member having telescopingconnection with each other, bearlings in said tube between said tube andsaid drive-shaft and said driving member respecx tively, a yieldableclutch between said driveshaft and said driving member comprising areleasable member, said clutch provided with complemental clutch-facesarranged to relatively yield to excessload, a spring urging engagement,said clutch-faces and said spring' controlling the yield in said clutch,manual control means having operative connection with said releasableclutch-member and extending .to outside sai-d tube, and a brakecomprising a member having operative connection With said driving meansand a coacting releasable member, control means, said'control means andsaid tube provided With complemental faces controlling positionalrelations of said releasable members. y

6. ln a device of the character described, the combination of arotatable head, a manipulating handle therefor, said handle comprising atube, a pair of telescoping drive-shafts in said tube for rotating saidhead, bearings in said tube therefor, a clutch between said drive-shaftscomprising a clutch-member on one of said drive-shafts and acomplemental clutch-sleeve on the other of said drive-shafts, saidclutch-sleeve axially movable for engagement and disengagement of saidclutch, said drive-shafts having journal connection one within the otherat one side of said clutch, a spring about one of said drive-shafts atthe other side of said clutch urging engaging movement of said sleevewith said clutchmembcr, and manual control means extending to outsidesaid tube Vhaving operative connection with said sleeve for positionallycontrolling said sleeve.

7. ln a device of the character described, the combination of arotatable head, a manipulating handle therefor, said handle comprising atube, a pair of telescoping drive-shafts in said tube for rotating saidhead, bearings in said tube therefor, a clutch between said drive-shaftscomprising a clutch-member on one of said drive-shafts and acomplemental clutch-sleeve on the other of said drive-shafts, saidclutch-sleeve axially movable for engagement and disengagement of saidclutch, a spring about one of said drive-shafts urging engaging movementof said sleeve With said clutch-member, a brake comprising complementalbrake-members, one of said brakemembers secured to one of saiddrive-shafts, and manual control means extending to outside of saidhandle having operative connections With the other of said brake-membersand with said clutch-sleeve.

8. In a device of the character described, the combination of arotatable head, a manipulating handle therefor, said handle comprising atube, a pair of driving members in said tube for rotating said hea-d, areleasable clutch between said driving members, said releasable clutchcomprising an axially movable sleeve, rotative drive connection betweensaid sleeve and one of said driving members, a spring about saidlast-named driving member urging engaging movement of said clutchsleeve,a sleeve about said spring and said clutch-sleeve having operativeconnection With said clutch-sleeve for positionally controlling saidclutch-sleeve, a brake between said other of said driving members andsaid last-named sleeve, and manual control means for said last-namedsleeve extending to outside said handle for movin' said last-namedsleeve in opposite axial directions for clutch release and brakeengagement, and for clutch engagement and brake release.

9. In a device of the character described, the combination of arotatable head, a manipula-ting handle therefor comprising a tube, apair of axially alined drive-shafts in said tube, a clutch between saiddrive-shafts comprisin g a clutch-member on one of said driveshafts anda clutch-sleeve about the other of said drive-shafts, a brake comprisinga brakemember on said last-named drive-shaft, a brake-sleeve about saidlast-named driveshaft, a spring in said brake-sleeve about said

